如何让UITextView检测网站,邮件和电话号码的链接

我有一个UITextView对象.UIView中的文字有电话号码,邮件链接,网站链接.我想将它们显示为具有以下功能的链接.

当有人点击URL时 - Safari应该打开网站.当有人点击电子邮件链接时 - 邮件应该打开我的地址到字段当有人点击电话号码时 - 电话应用程序应拨打该号码

有没有人以前做过这个或知道如何处理它？

谢谢,AJ

1> 小智..：

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如果您使用的是OS3.0

你可以像下面这样做

textview.editable = NO;
textview.dataDetectorTypes = UIDataDetectorTypeAll;

---

textview.selectable = YES; 如果你点击它,链接就需要做一些事情,至少从iOS 7开始.

---

在XCode 4中,您可以在IB中设置检测类型

2> Andrew Hersh..：

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有关检测电子邮件地址的注意事项:必须安装邮件应用程序(它不在iOS模拟器上),用于打开邮件撰写屏幕的电子邮件链接.

3> Fangming..：

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Swift 3.0 +

从swift 3.0开始,如果您想以编程方式执行此操作,请使用以下代码.

textview.isEditable = false
textview.dataDetectorTypes = .all

或者如果你有故事板

4> Yash Bedi..：

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虽然问题是超级老。如果有人遇到同样的问题

也可以用作UILabel。尽管下面的解决方案可以完成工作：[不需要任何库..]

因此，我使用了MFMailcomposer（）和UITexView [代码在Swift 3.0-Xcode 8.3.2中]

100％的崩溃证明和工作代码可处理所有极端情况。= D

步骤1。

import MessageUI

步骤2.添加委托

class ViewController: UITextViewDelegate, MFMailComposeViewControllerDelegate{

步骤3.从StoryBoard添加textView IBOutlet

@IBOutlet weak var infoTextView: UITextView!

步骤4.在您的viewDidload（）中调用以下方法

func addInfoToTextView()  {
    let attributedString = NSMutableAttributedString(string: "For further info call us on : \(phoneNumber)\nor mail us at : \(email)")
    attributedString.addAttribute(NSLinkAttributeName, value: "tel://", range: NSRange(location: 30, length: 10))
    attributedString.addAttribute(NSLinkAttributeName, value: "mailto:", range: NSRange(location: 57, length: 18))
    self.infoTextView.attributedText = attributedString
    self.infoTextView.linkTextAttributes = [NSForegroundColorAttributeName:UIColor.blue, NSUnderlineStyleAttributeName:NSNumber(value: 0)]
    self.infoTextView.textColor = .white
    self.infoTextView.textAlignment = .center
    self.infoTextView.isEditable = false
    self.infoTextView.dataDetectorTypes = UIDataDetectorTypes.all
    self.infoTextView.delegate = self
}

步骤5.为TextView实现委托方法

@available(iOS, deprecated: 10.0)
func textView(_ textView: UITextView, shouldInteractWith url: URL, in characterRange: NSRange) -> Bool {
    if (url.scheme?.contains("mailto"))! && characterRange.location > 55{
        openMFMail()
    }
    if (url.scheme?.contains("tel"))! && (characterRange.location > 29 && characterRange.location < 39){
        callNumber()
    }
    return false
}

//For iOS 10
@available(iOS 10.0, *)
func textView(_ textView: UITextView, shouldInteractWith url: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {
    if (url.scheme?.contains("mailto"))! && characterRange.location > 55{
        openMFMail()
    }
    if (url.scheme?.contains("tel"))! && (characterRange.location > 29 && characterRange.location < 39){
        callNumber()
    }
    return false
}

步骤6.编写帮助程序方法以打开MailComposer和Call App

func callNumber() {
    if let phoneCallURL = URL(string: "tel://\(phoneNumber)")
    {
        let application:UIApplication = UIApplication.shared
        if (application.canOpenURL(phoneCallURL))
        {
            let alert = UIAlertController(title: "Call", message: "\(phoneNumber)", preferredStyle: UIAlertControllerStyle.alert)
            if #available(iOS 10.0, *)
            {
                alert.addAction(UIAlertAction(title: "Call", style: .cancel, handler: { (UIAlertAction) in
                    application.open(phoneCallURL, options: [:], completionHandler: nil)
                }))
            }
            else
            {
                alert.addAction(UIAlertAction(title: "Call", style: .cancel, handler: { (UIAlertAction) in
                    application.openURL(phoneCallURL)
                }))
            }

            alert.addAction(UIAlertAction(title: "cancel", style: .default, handler: nil))
            self.present(alert, animated: true, completion: nil)
        }
    }
    else
    {
        self.showAlert("Couldn't", message: "Call, cannot open Phone Screen")
    }
}
func openMFMail(){
    let mailComposer = MFMailComposeViewController()
    mailComposer.mailComposeDelegate = self
    mailComposer.setToRecipients(["\(email)"])
    mailComposer.setSubject("Subject..")
    mailComposer.setMessageBody("Please share your problem.", isHTML: false)
    present(mailComposer, animated: true, completion: nil)

}

步骤7.编写MFMailComposer的Delegate方法

func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {
    switch result {
    case .cancelled:
        print("Mail cancelled")
    case .saved:
        print("Mail saved")
    case .sent:
        print("Mail sent")
    case .failed:
        print("Mail sent failure: \(String(describing: error?.localizedDescription))")
    default:
        break
    }
    controller.dismiss(animated: true, completion: nil)
}

就这样，您就完成了... = D

这是上面代码的swift文件： textViewWithEmailAndPhone.swift

设置以下属性以将其用作UILabel